Más contenido relacionado La actualidad más candente (20) Más de Μαυρουδης Μακης (20) 2. Atoms are very tiny particles that form
the building blocks for all matter
What are Atoms?
3. • A microscope is used to look at very tiny
objects by making them appear larger
• It is sort of like a telescope or binoculars
What Does a Microscope Do?
4. Let’s do a little exercise!!
Just What Size Is an Atom?
What you’ll need
• A strip of paper
• A pair of scissors
What to do
• Take your strip of paper and cut it into equal halves
• Cut one of the remaining pieces of paper into equal
halves
• Repeat!
13. Cut
9
Just What Size Is an Atom?
0.5 mm
It’s too difficult to keep cutting!
Let’s just pretend from now on
14. Cut 10
Just What Size Is an Atom?
0.25 mm
The size of one
tiny light (pixel) on
a computer screen
15. Cut 11
Just What Size Is an Atom?
0.125 mm
Wow, I didn’t think anything
was this small!
21. Cut 17
Just What Size Is an Atom?
0.0015 mm
We’re not done yet
keep cutting!
23. Cut 19
Just What Size Is an Atom?
0.5 micron
We’re not done yet
keep cutting!
24. Cut 20
Just What Size Is an Atom?
0.25 micron
Tiny wires inside a
computer chip
25. Cut 21
Just What Size Is an Atom?
0.13 micron
We’re not done yet
keep cutting!
27. Cut 23
Just What Size Is an Atom?
0.03 micron
We’re not done yet
keep cutting!
28. Cut 24
Just What Size Is an Atom?
0.015 micron
We’re not done yet
keep cutting!
29. Cut 25
Just What Size Is an Atom?
0.008 micron
We’re not done yet
keep cutting!
35. Cut 31
Just What Size Is an Atom?
0.00013 micron
Atoms !!!
C
H
O
N
He
Na
Cl
Ca
37. How Many Atoms Are In A
Person?
that’s …
eight million-million-
million-million-thousand
atoms
Wow!
Around …
8,000,000,000,000,000,000,000,000,000
38. Molecules are very small objects that
are made up of connected atoms
What are Molecules?
39. What Do Molecules Look
Like?
Molecules can take on all kinds
of different shapes and sizes
Let’s look at a few!
47. Do Molecules Move?
Yes, they sure do!
How do they move?
It depends on whether they are
in a solid, liquid, or gas
